Finding the Third Proportional to 21,292.88 and 31,939.88

Step by Step Solution

1. Step 1: Write the proportion equation
   21,292.88 : 31,939.88 = 31,939.88 : x
2. Step 2: Convert to fraction form
   21,292.88/31,939.88 = 31,939.88/x
3. Step 3: Cross multiply
   21,292.88x = 31,939.88 × 31,939.88
4. Step 4: Simplify right side
   21,292.88x = 1,020,155,615.02
5. Step 5: Solve for x
   x = 1,020,155,615.02/21,292.88
6. Step 6: Final answer
   x = 47,910.66